WO2019129243A1

WO2019129243A1 - Control method for improving evaporation capacity of refrigerator, and refrigerator

Info

Publication number: WO2019129243A1
Application number: PCT/CN2018/125057
Authority: WO
Inventors: 曹东强
Original assignee: 青岛海尔股份有限公司
Priority date: 2017-12-29
Filing date: 2018-12-28
Publication date: 2019-07-04
Also published as: CN108286867A

Abstract

A control method for improving the evaporation capacity of a refrigerator, and the refrigerator. The refrigerator comprises a compressor (10), a condensate fan (80) connected to the compressor (10) and used for accelerating heat dissipation of a condenser (20), and an evaporation pan (90) disposed below the condenser (20). The control method comprises: when the compressor (10) is started, the condensate fan (80) runs at a first rotating speed; and when the compressor is stopped, the condensate fan (80) runs for a preset period of time at a second rotating speed lower than the first rotating speed, so that the evaporation capacity of the evaporation pan (90) is improved. After the compressor (10) is stopped, the condensate fan (80) still runs and stops after continuing to run for a period of time at a low speed, and an air flow above the evaporation pan (90) is accelerated by means of the rotation of the condensate fan (80), so that the capacity to evaporate water in the evaporation pan (90) is improved, and it is ensured that the water in the evaporation pan (90) does not overflow. Moreover, a heating coil (100) does not need to be provided, and thus, a series of problems caused by the heating coil (100) are avoided.

Description

Control method for improving refrigerator evaporation capacity and refrigerator

Technical field

The invention relates to the technical field of household appliances, in particular to a control method for improving the evaporation capacity of a refrigerator and a refrigerator.

Background technique

During the operation of the refrigerator, condensed water will be generated due to the hot and cold exchange in the box, and the defrosting water will be generated by the periodic defrosting of the refrigerator. Therefore, the refrigerator is generally provided with an evaporating dish for collecting condensed water and defrosting water. In the prior art, the evaporating dish is generally placed in a press chamber, a heating coil is arranged in the evaporating dish, one end of the heating coil is connected to the exhaust pipe of the compressor, and the other end is connected to the inlet end of the condenser of the refrigerator, and the heating coil is entirely immersed in the In the water of the evaporating dish, the water is heated by the high-temperature refrigerant gas flowing through the heating coil.

However, in order to ensure the evaporation capacity, the heating coil should be long enough to ensure that the defrosting water in the evaporating dish does not overflow, and the space of the press chamber is limited, and the increase in the length of the heating coil leads to a large space. The problem is that it is not convenient to install other parts of the refrigerator; and the heat exchange amount of the heating coil of a limited length is small, and the evaporation speed is difficult to meet the use requirements.

Summary of the invention

In view of the above problems, it is an object of the present invention to provide a control method and a refrigerator for improving the evaporation capacity of a refrigerator that overcome the above problems or at least partially solve the above problems.

A further object of the invention is to improve the evaporation capacity of the refrigerator and to enhance the overall performance of the refrigerator.

According to an aspect of the present invention, the present invention provides a control method for improving the evaporation capacity of a refrigerator, the refrigerator including a compressor, a condenser connected to the compressor, a condenser fan for accelerating heat dissipation of the condenser, and a condenser disposed below the condenser An evaporating dish; wherein the control method comprises:

When the compressor is turned on, the condensing fan runs at the first speed;

When the compressor is shut down, the condensing fan runs for a preset time at a second speed lower than the first speed to increase the evaporation capacity of the evaporating dish.

Optionally, the second rotational speed is 50% to 80% of the first rotational speed.

Optionally, the preset time is determined according to the external environment humidity of the refrigerator and/or determined according to an average time of the refrigerator defrosting time interval and/or according to the water level in the evaporating dish.

Optionally, the step of determining the preset time according to the ambient temperature of the external environment in which the refrigerator is located specifically includes:

Detecting the external environment humidity of the refrigerator;

If the external environment humidity is less than the first preset ambient humidity, the condensation fan runs at the second speed for the first preset time;

If the external environment humidity is greater than the first preset ambient humidity and less than the second preset ambient humidity, the condensation fan operates at the second rotation speed for a second preset time;

If the external environment humidity is greater than the second preset ambient humidity, the condensing fan runs at the second speed for a third preset time;

The first preset time is less than the second preset time, and the second preset time is less than the third preset time.

Optionally, the step of determining the preset time according to the average time of the refrigerator defrosting time interval specifically includes:

Obtaining a defrosting time point of the refrigerator before the current time, and calculating an average time of the defrosting time interval of the refrigerator;

If the average time is greater than the first preset average time, the condensation fan runs at the second speed for a fourth preset time;

If the average time is greater than the second preset average time and less than the first preset average time, the condensation fan runs at the second rotation speed for a fifth preset time;

If the average time is less than or equal to the second preset average time, the condensation fan runs at the second speed for a sixth preset time;

The fourth preset time is less than the fifth preset time, and the fifth preset time is less than the sixth preset time.

Optionally, the step of determining the preset time according to the water level in the evaporating dish comprises:

Detecting the water level in the evaporating dish;

If the water level in the evaporating dish is lower than the preset low water level line, the condensation fan runs at the second speed for the seventh preset time;

If the water level in the evaporating dish is between the preset low water level line and the preset high water level line, the condensation fan runs at the second speed for the eighth preset time;

If the water level in the evaporating dish is higher than the preset high water level line, the condensing fan runs at the second rotating speed for the ninth preset time;

The seventh preset time is less than the eighth preset time, and the eighth preset time is less than the ninth preset time.

Detecting the water level in the evaporating dish;

If the water level in the evaporating dish is gradually increased, the preset time is increased;

If the water level in the evaporating dish is gradually reduced, the preset time is reduced.

According to another aspect of the present invention, there is also provided a refrigerator comprising:

a compressor, a condenser connected to the compressor, a condenser fan for accelerating heat dissipation of the condenser, an evaporating dish disposed below the condenser, and a controller;

The controller is configured to control the condensing fan to operate at the first speed when the compressor is turned on;

The controller is further configured to control the condensing fan to operate at a second speed less than the first speed for a predetermined time when the compressor is turned off to increase the evaporation capacity of the evaporating dish.

Optionally, the refrigerator further includes:

a humidity sensor configured to detect an external environment humidity in which the refrigerator is located;

The controller is also configured to determine a preset time based on the ambient humidity of the external environment.

Optionally, the controller is further configured to obtain a defrosting time point of the refrigerator before the current time, calculate an average time of the refrigerator defrosting time interval, and determine a preset time according to an average time of the refrigerator defrosting time interval.

Optionally, the refrigerator further includes:

a water level sensor configured to detect a water level in the evaporating dish;

The controller is also configured to determine a preset time based on the water level in the evaporating dish.

Optionally, the refrigerator further includes:

The controller is also configured to gradually increase the water level in the evaporating dish to increase the preset time; the water level gradually decreases in the evaporating dish, and the preset time is reduced.

The control method for improving the evaporation capacity of the refrigerator of the invention, after the compressor is turned off, the condensing fan is still running, and continues to run at a lower speed for a period of time, then stops, and the air flow above the evaporating dish is accelerated by the rotation of the condensing fan. The evaporation ability of the water in the evaporating dish is increased to ensure that the water in the evaporating dish does not overflow; at the same time, the arrangement of the heating coil can be omitted, and a series of problems caused by the heating coil can be avoided.

Further, in the control method for improving the evaporation capacity of the refrigerator of the present invention, after the compressor is stopped, the running time of the condensation fan is determined according to the external environment humidity, and/or determined according to the average time of the refrigerator defrosting time interval, and/or according to the evaporating dish The water level in the medium is determined, thereby determining the appropriate time for the condensing fan to operate at the second speed, and reducing the power consumption of the condensing fan while improving the evaporation capacity and ensuring that the defrosting water does not overflow.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the figure:

1 is a schematic structural view of a refrigerator in accordance with one embodiment of the present invention;

2 is a schematic structural view of a refrigerator in accordance with another embodiment of the present invention;

Figure 3 is a schematic structural view of a refrigerator in accordance with still another embodiment of the present invention;

4 is a flow chart of a control method for improving the evaporation capacity of a refrigerator according to an embodiment of the present invention;

5 is a flow chart showing a control method for improving the evaporation capacity of a refrigerator according to Embodiment 1 of the present invention;

6 is a flow chart showing a control method for improving the evaporation capacity of a refrigerator according to Embodiment 2 of the present invention;

7 is a flow chart showing a control method for improving the evaporation capacity of a refrigerator according to Embodiment 3 of the present invention;

Figure 8 is a schematic block diagram of a refrigerator in accordance with one embodiment of the present invention.

Detailed ways

The present embodiment first provides a refrigerator. Referring to Figures 1 and 8, the refrigerator 1 can generally include a cabinet defining at least one front open storage compartment and a front compartment. The side is used to open or close the door body of the storage compartment, and the outer periphery of the storage compartment is covered with a casing outer casing, and the casing outer casing and the storage compartment are filled with a heat insulating material, such as a foaming agent, to avoid cold. The amount is lost. There are usually a plurality of storage rooms, such as a refrigerating room, a freezing room, a greenhouse, and the like. The number and function of the specific storage compartments can be configured according to prior requirements.

The refrigerator can be a direct-cooling refrigerator or an air-cooled refrigerator, which can use a compression refrigeration cycle as a cooling source. The refrigeration cycle system may generally include a compressor 10, a condenser 20, a capillary 50, an evaporator 30, and the like. The refrigerant exchanges heat directly or indirectly with the storage compartment in the evaporator 30 at a low temperature, absorbs heat of the storage compartment and vaporizes, and the generated low pressure vapor is sucked by the compressor 10, and compressed by the compressor 10 to High-pressure discharge, the high-pressure gaseous refrigerant discharged from the compressor 10 enters the condenser 20, is cooled by the normal temperature cooling water or air, and condenses into a high-pressure liquid, and the high-pressure liquid flows through the capillary 50 to become a low-pressure low-temperature gas-liquid two-phase mixture. And entering the evaporator 30, wherein the liquid refrigerant evaporates and cools in the evaporator 30, and the generated low-pressure steam is again sucked by the compressor 10, so that the cycle is repeated, and the continuous cooling of the refrigerator is realized.

The refrigerator may further include a drying filter 40 connected between the condenser 20 and the capillary 50 for filtering the debris of the refrigeration system and absorbing residual moisture in the refrigeration system to prevent ice jam. Since the condensed water is often generated at the contact between the door body of the refrigerator and the door frame, a dew tube 60 is usually disposed in the refrigerator. The dew tube 60 is usually disposed in the interlayer of the door frame, and one end thereof is connected to the output end of the condenser 20, and the other end is connected. The evaporator 30 is connected through the drying filter 40 and the capillary 50 to heat the refrigerator door frame with the residual heat of the refrigerant cooled by the condenser 20 to prevent dew condensation.

For the air-cooled refrigerator, an evaporating fan 70 is further disposed in the refrigerator, and the evaporating fan 70 is configured to cause the air cooled by the evaporator 30 to flow to the storage compartment to transfer the cooling capacity to the storage compartment, and adjust the storage compartment. temperature.

To facilitate heat dissipation of the compressor 10 and the condenser 20, generally, the refrigerator further includes a condensing blower 80 configured to cause air that exchanges heat with the condenser 20 to flow to the outside of the refrigerator to accelerate heat dissipation of the condenser 20. .

During the operation of the refrigerator, condensed water is generated due to cold and heat exchange in the box, and the defrosting of the evaporator 30 of the refrigerator periodically generates defrosting water. The refrigerator is generally provided with an evaporating dish 90 for collecting condensed water and defrosting water. Generally, the evaporating dish 90 is disposed at a lower portion of the condenser 20. In order to improve the evaporation capacity, a heating coil 100 may be disposed in the evaporating dish 90. One end of the heating coil 100 is connected to the exhaust pipe of the compressor 10, and the other end is connected to the inlet end of the condenser 20 of the refrigerator, and the heating coil 100 is entirely immersed in evaporation. In the water of the dish 90, the water is heated by the high-temperature refrigerant gas flowing through the heating coil 100.

However, due to the limitation of the length of the heating coil 100, the amount of heat exchange is small, and the evaporation rate of water in the evaporating dish 90 is difficult to meet the use requirements. To this end, the refrigerator of this embodiment further includes a controller 130. The controller 130 is configured to control the condensing fan 80 to operate at a first speed when the compressor 10 is turned on; the controller 130 is further configured to control the condensing fan 80 to operate at a second speed less than the first speed when the compressor 10 is turned off. Set the time. That is to say, when the refrigerator is cooled, the compressor 10 is turned on, and the controller 130 controls the condensation fan 80 to operate at the first rotation speed to ensure the heat dissipation of the condenser 20; when the temperature of the storage compartment reaches the set temperature, it is not required. During cooling, the compressor 10 is turned off. At this time, the rotation speed of the condensation fan 80 is adjusted, so that the condensation fan 80 continues to operate for a period of time at a second rotation speed lower than the first rotation speed to accelerate the flow of air above the evaporation tray 90, and the evaporation tray 90 is raised. The evaporation capacity of water.

In the prior art, the condensing blower 80 is only rotated during the operation of the compressor 10 for ensuring heat dissipation of the condenser 20, and the condensing blower 80 is stopped while the compressor 10 is shut down. In the refrigerator of the embodiment, when the compressor 10 is turned off, the controller 130 controls the condensation fan 80 to still operate at a relatively low rotational speed for a period of time, thereby improving the evaporation ability of the water in the evaporating dish 90 and ensuring the water in the evaporating dish 90. Will not overflow.

The second rotational speed is less than the first rotational speed. Specifically, the second rotational speed may be 50% to 80% of the first rotational speed, and the condensation blower 80 operates at the second rotational speed to accelerate evaporation of water in the evaporating dish 90, and the noise is relatively low.

In one embodiment of the embodiment, the refrigerator can retain the heating coil 100 disposed in the evaporating dish 90. During the refrigeration process of the refrigerator, the high temperature refrigerant gas flowing through the heating coil 100 heats the water, and the condensing fan 80 is accelerating. While the condenser 20 dissipates heat, the evaporation of water in the evaporating dish 90 is accelerated. After the refrigerator is stopped from cooling (compressor 10 is turned off), the operation of the condenser fan 80 increases the evaporation rate of water in the evaporating dish 90.

In another embodiment of the embodiment, the heating coil 100 of the refrigerator is eliminated, and after the refrigerator is stopped, the operation of the condenser fan 80 increases the evaporation rate of water in the evaporating dish 90.

2 is a schematic structural view of a refrigerator in accordance with another embodiment of the present invention. In this embodiment, the refrigerator may further include a humidity sensor 110 configured to detect the external environment humidity where the refrigerator is located, and the controller 130 is further configured to determine the preset time according to the external environment humidity, that is, determine the condensation fan 80 to The time when the second speed is running.

Specifically, in this embodiment, the controller 130 is configured to control the condensation fan 80 to operate at the second rotation speed for a first preset time when the external environment humidity is less than the first preset environmental humidity value; the external environment humidity is greater than the first When the preset ambient humidity value is less than the second preset ambient humidity, the control condensation fan 80 is operated at the second rotation speed for a second preset time; when the external environment humidity is greater than the second preset ambient humidity, the condensation fan 80 is controlled to be the second The speed runs for the third preset time. The first preset time is less than the second preset time, and the second preset time is less than the third preset time.

The higher the humidity of the external environment in which the refrigerator is located, the slower the evaporation rate of the water, and the preset time for the operation of the condensing fan 80 at the second speed according to the humidity of the external environment can be reasonably determined that the condenser 10 is closed after the compressor 10 is stopped. When the operation continues, the time during which the condensation fan 80 is operated at the second rotation speed is too short to evaporate the water in the evaporating dish 90 in time, and the condensation fan 80 is prevented from operating at the second rotation speed for a long time to increase the power consumption. Thus, a reasonable time for the condensing fan 80 to operate at the second rotational speed is determined, so that the water in the evaporating dish 90 is sufficiently and timely evaporated to prevent the water in the evaporating dish 90 from overflowing.

The first preset ambient humidity value may be set to 50% relative humidity, the second preset ambient humidity may be set to 75% relative humidity, and the first preset time may be set to 10 minutes, the second preset time It can be set to 20 minutes, and the third preset time can be set to 30 minutes. The specific values of the above parameters are all examples. In the implementation, the above parameters can be flexibly adjusted according to the specific application environment and usage requirements.

In one embodiment of the present invention, the controller 130 may be further configured to acquire a defrosting time point of the refrigerator before the current time, calculate an average time of the refrigerator defrosting time interval, and determine according to an average time of the refrigerator defrosting time interval. The preset time during which the condensing fan 80 is operated at the second rotational speed.

Specifically, in this embodiment, the controller 130 is configured to control the condensation fan 80 to operate at the second rotation speed for a fourth preset time when the average time of the refrigerator defrost time interval is greater than the first preset average time; When the average time of the frost time interval is greater than the second predetermined average time and less than the first preset average time, the control condensation fan 80 is operated at the second rotation speed for a fifth preset time; the average time of the refrigerator defrost time interval is less than or equal to At the second predetermined averaging time, the condensing fan 80 is controlled to operate at the second rotational speed for a sixth predetermined time. The fourth preset time is less than the fifth preset time, and the fifth preset time is less than the sixth preset time.

The average time of the refrigerator defrosting time interval refers to the average time of multiple defrosting intervals before the current time, for example, calculating the average time of the first three defrosting intervals, and determining that the condensing fan 80 is operated at the second rotating speed according to the length of the time. Preset time. The shorter the interval between the defrosting of the refrigerator, the greater the amount of defrosting water flowing into the evaporating dish 90, and the higher the risk of overflow of the water level in the evaporating dish 90. According to the average time of the refrigerator defrosting interval, the preset time of the condensing fan 80 running at the second speed is determined, and the continuous running time of the condensing fan 80 after the compressor 10 is stopped can be reasonably determined, and the time for the condensing fan 80 to operate at the second speed is avoided. Too short to evaporate the water in the evaporating dish 90 in time, while avoiding the condensing fan 80 operating at a second rotational speed for an excessively long period of time to increase power consumption. Thus, a reasonable time for the condensing fan 80 to operate at the second rotational speed is determined, so that the water in the evaporating dish 90 is sufficiently and timely evaporated to avoid excessive overflow of the water in the evaporating dish 90, and at the same time, the condensing fan 80 can be avoided. The second rotational speed is too long to increase the power consumption.

The first preset average time can be set to 40 hours, the second preset average time can be set to 20 hours, the fourth preset time can be set to 10 minutes, and the fifth preset time can be set to 20 minutes. The fifth preset time can be set to 30 minutes. The specific values of the above parameters are all examples. In the implementation, the above parameters can be flexibly adjusted according to the specific application environment and usage requirements.

In one of the embodiments of the present invention, the controller 130 may be configured to determine the preset time based on the average ambient humidity and the average time of the refrigerator defrost time interval. Specifically, the controller 130 may compare the preset time determined according to the external environment humidity with a preset time determined according to the average time of the refrigerator defrosting time interval, when the preset time is determined according to the external environment humidity, and according to the refrigerator defrosting The averaging time of the time interval determines that the preset time is different, and the determined larger preset time is taken as the time at which the condensing fan 80 operates at the second speed. This makes it more reasonable to determine the time at which the condensing fan 80 continues to operate at the second speed after the compressor 10 is shut down.

3 is a schematic structural view of a refrigerator in accordance with still another embodiment of the present invention, in which the refrigerator may include a water level sensor 120 configured to detect the water level in the evaporating dish 90 in real time. The controller 130 is configured to determine a preset time based on the water level in the evaporating dish 90. Specifically, a low water level line and a high water level line are presetly set, and the controller 130 is configured to control the condensing fan 80 to operate at the second speed when the water level in the evaporating dish 90 is lower than the preset low water level line. Setting the time; when the water level in the evaporating dish 90 is between the preset low water level line and the preset high water level line, controlling the condensation fan 80 to operate at the second rotation speed for the eighth predetermined time; the water level in the evaporating dish 90 is higher than When the high water mark is preset, the condensation fan 80 is controlled to operate at the second speed for a ninth predetermined time. The seventh preset time is less than the eighth preset time, and the eighth preset time is less than the ninth preset time.

When the water level in the evaporating dish 90 is lower than the preset low water level line, it is confirmed as a safe water level, and when the compressor 10 is stopped, the condensing fan 80 continues to run at the second rotating speed for a seventh preset time and stops, for example, after running for 10 minutes. Stopping, since the water level in the evaporating dish 90 is at a safe water level, the time during which the condensing fan 80 is operated at the second rotational speed can be appropriately shortened. When the water level in the evaporating dish 90 is between the preset low water level line and the preset high water level line, it is confirmed as a general water level, and after the compressor 10 is stopped, the condensing fan 80 continues to operate at the second speed for the eighth preset time and then stops. For example, after the operation is stopped for 20 minutes, since the water level in the evaporating dish 90 is in a state of a normal water level, the time during which the condensation fan 80 is operated at the second rotation speed can be appropriately increased. When the water level in the evaporating dish 90 exceeds the preset high water level line, it is confirmed as the warning water level. After the compressor 10 is stopped, the condensing fan 80 stops after the ninth preset time continues to run at the second rotation speed, for example, stops after 30 minutes of operation. Since the water level in the evaporating dish 90 is at the warning water level, the time during which the condensing fan 80 is operated at the second rotating speed should be increased to accelerate the evaporation of water in the evaporating dish 90 to prevent the water from overflowing.

In one embodiment of the embodiment, the controller 130 may be further configured to increase the preset time when the water level in the evaporating dish 90 is gradually increased; when the water level is gradually decreased in the evaporating dish 90, the preset time is decreased to The time during which the condenser 20 is operated at the second rotational speed is dynamically adjusted, thereby determining a more suitable time for the condenser 20 to continue to operate according to the actual change of the water level, and avoiding the condenser while ensuring timely evaporation of water in the evaporating dish 90. 20 Various problems caused by running at a second rotational speed for too long or too short.

Based on the refrigerator of any of the above embodiments, the present invention further provides a control method for improving the evaporation capacity of the refrigerator. As shown in FIG. 4, the control method includes:

S402, when the compressor 10 is turned on, the condensation fan 80 operates at the first rotation speed;

When the refrigerator is cooled, the compressor 10 is turned on, and the condensing fan 80 is operated at the first rotational speed to ensure heat dissipation of the condenser 20.

S404, when the compressor 10 is shut down, the condensation fan 80 is operated for a preset time at a second rotation speed lower than the first rotation speed to increase the evaporation capacity of the evaporating dish 90.

After the storage compartment of the refrigerator is lowered to a certain temperature, the refrigerator 10 is turned off when the refrigerator does not need to be re-cooled, and the condensation fan 80 is adjusted to operate at a second rotation speed lower than the first rotation speed for a certain period of time (preset time). Stop again to accelerate the flow of air above the evaporating dish 90, increasing the evaporation capacity of the water in the evaporating dish 90.

In the prior art, the condensing blower 80 is only rotated during the operation of the compressor 10 for ensuring heat dissipation of the condenser 20, and the condensing blower 80 is stopped while the compressor 10 is shut down. In the refrigerator of this embodiment, when the compressor 10 is turned off, the condensation fan 80 is still operated at a relatively low rotational speed for a period of time to increase the evaporation ability of the water in the evaporating dish 90, and to ensure that the water in the evaporating dish 90 does not overflow.

The preset time at which the condensing blower 80 operates at the second rotational speed may be determined based on the ambient humidity of the refrigerator in which it is located and/or determined based on the average time of the refrigerator defrosting time interval and/or based on the water level in the evaporating dish 90.

The preset time at which the condensing blower 80 is operated at the second rotational speed may be determined according to any one of the above three or determined according to any two of the above three or determined according to three of the above three. When the preset time for the condensing fan 80 to operate at the second speed is determined according to any two of the above, if any two determined preset times are different, the determined larger preset time is taken as the condensing fan 80. The time at which the second speed is run. When the preset time for the condensing fan 80 to operate at the second rotational speed is determined according to three of the above three, if any two or three of the three determined preset times are different, the determined maximum The preset time is the time during which the condensing blower 80 is operated at the second rotational speed. This makes it more reasonable to determine the time at which the condensing fan 80 continues to operate at the second speed after the compressor 10 is shut down.

In one of the embodiments of the present embodiment, the preset time at which the condensation fan 80 operates at the second rotational speed is determined according to the external environmental humidity in which the refrigerator is located. Since the humidity of the external environment where the refrigerator is located is higher, the evaporation speed of the water is slower, and the preset time of the operation of the condensation fan 80 at the second rotation speed is determined according to the humidity of the external environment, and the condensation fan can be reasonably determined after the compressor 10 is stopped. When the operation continues for 80, the time for the condensation fan 80 to operate at the second rotation speed is too short to evaporate the water in the evaporating dish 90 in time, and the condensation fan 80 is prevented from operating at the second rotation speed for a long time to increase the power consumption. Thus, a reasonable time for the condensing fan 80 to operate at the second rotational speed is determined, so that the water in the evaporating dish 90 is sufficiently and timely evaporated to prevent the water in the evaporating dish 90 from overflowing.

Specifically, the step of determining the preset time according to the humidity of the external environment where the refrigerator is located specifically includes:

If the external environment humidity is less than the first preset ambient humidity, the condensation fan 80 is operated at the second rotation speed for the first preset time;

If the external environment humidity is greater than the first preset ambient humidity and less than the second preset ambient humidity, the condensation fan 80 operates at the second rotational speed for a second preset time;

If the external environment humidity is greater than the second preset ambient humidity, the condensing fan 80 operates at the second speed for a third predetermined time.

In one of the embodiments of the present embodiment, the preset time at which the condensing blower 80 operates at the second rotational speed is determined according to the average time of the refrigerator defrosting time interval. The shorter the interval between the defrosting of the refrigerator, the greater the amount of defrosting water flowing into the evaporating dish 90, and the higher the risk of overflow of the water level in the evaporating dish 90. According to the average time of the refrigerator defrosting interval, the preset time of the condensing fan 80 running at the second speed is determined, and the continuous running time of the condensing fan 80 after the compressor 10 is stopped can be reasonably determined, and the time for the condensing fan 80 to operate at the second speed is avoided. Too short to evaporate the water in the evaporating dish 90 in time, while avoiding the condensing fan 80 operating at a second rotational speed for an excessively long period of time to increase power consumption. Thus, a reasonable time for the condensing fan 80 to operate at the second rotational speed is determined, so that the water in the evaporating dish 90 is sufficiently and timely evaporated to avoid excessive overflow of the water in the evaporating dish 90, and at the same time, the condensing fan 80 can be avoided. The second rotational speed is too long to increase the power consumption.

The step of determining the preset time according to the average time of the refrigerator defrosting time interval specifically includes:

Obtain the defrosting time point of the refrigerator before the moment, and calculate the average time of the refrigerator defrosting time interval;

If the average time is greater than the first preset average time, the condensation fan 80 operates at the second rotation speed for a fourth preset time;

If the average time is greater than the second predetermined average time and less than the first preset average time, the condensation fan 80 is operated at the second rotation speed for a fifth preset time;

If the average time is less than or equal to the second predetermined average time, the condensation fan 80 operates at the second speed for a sixth predetermined time.

The average time of the refrigerator defrosting time interval refers to the average time of multiple defrosting intervals before the current time, for example, calculating the average time of the first three defrosting intervals, and determining that the condensing fan 80 is operated at the second rotating speed according to the length of the time. Preset time.

In one embodiment of the present embodiment, the preset time for the operation of the condensing fan 80 to operate at the second speed is determined according to the water level in the evaporating dish 90. The step of determining the preset time according to the water level in the evaporating dish 90 specifically includes:

Detecting the water level in the evaporating dish 90;

If the water level in the evaporating dish 90 is lower than the low water level line, the condensation fan 80 operates at the second rotation speed for a seventh preset time;

If the water level in the evaporating dish 90 is between the low water line and the high water line, the condensation fan 80 is operated at the second speed for the eighth predetermined time;

If the water level in the evaporating dish 90 is higher than the high water level line, the condensing fan 80 operates at the second rotational speed for the ninth predetermined time.

Detecting the water level in the evaporating dish 90;

When the water level in the evaporating dish 90 is gradually increased, the preset time is increased;

When the water level in the evaporating dish 90 gradually decreases, the preset time is reduced.

The time during which the condenser 20 is operated at the second rotational speed is dynamically adjusted according to the change trend of the water level in the evaporating dish 90, thereby determining the more suitable time for the condenser 20 to continue to operate according to the actual change of the water level, in ensuring the evaporating dish 90. While the water evaporates in time, various problems caused by the condenser 20 running at the second rotational speed for too long or too short are avoided.

In order to facilitate a clearer understanding of the control method for improving the evaporation capacity of the refrigerator of the present invention, three specific embodiments of the control method for improving the evaporation capacity of the refrigerator of the present invention are exemplified below.

Example 1

FIG. 5 is a flowchart of a method for controlling an evaporation capacity of a refrigerator according to Embodiment 1 of the present invention. As shown in FIG. 5, the control method includes:

S502, it is determined whether the compressor 10 is powered on, and if so, step S504 is performed, and if not, step S506 is performed;

S504, the condensation fan 80 operates at a first speed;

S506, detecting the external environment humidity μ where the refrigerator is located, if the external environment humidity μ≤50%RH, step S508 is performed; if the external environment humidity is 50%RH<μ<75% RH, step S510 is performed; if the external environment humidity is μ≥75 %RH, step S512 is performed;

S508, the condensation fan 80 is operated at the second rotation speed for 10 minutes;

S510, the condensation fan 80 is operated at the second rotation speed for 20 minutes;

At S512, the condensing blower 80 is operated at the second rotational speed for 30 minutes.

Where RH represents relative humidity.

Example 2

6 is a flowchart of a method for controlling an evaporation capacity of a refrigerator according to Embodiment 2 of the present invention. As shown in FIG. 6, the control method includes:

S602, it is determined whether the compressor 10 is powered on, and if so, step S604 is performed, and if not, step S606 is performed;

S604, the condensation fan 80 operates at the first speed;

S606, obtaining the first three defrosting time points of the refrigerator before the current time, and calculating an average time T of the three defrosting time intervals. If T≥40 hours, step S608 is performed; if 20 hours<T<40 hours, performing Step S610; if T≤20 hours, step S612 is performed;

S608, the condensation fan 80 is operated at the second rotation speed for 10 minutes;

S610, the condensation fan 80 is operated at the second rotation speed for 20 minutes;

At S612, the condensing fan 80 is operated at the second rotational speed for 30 minutes.

Example 3

7 is a flowchart of a method for controlling an evaporation capacity of a refrigerator according to Embodiment 3 of the present invention. As shown in FIG. 7, the control method includes:

S702, it is determined whether the compressor 10 is powered on, and if so, step S704 is performed, and if not, step S706 is performed;

S704, the condensation fan 80 operates at the first rotation speed;

S706, the water level in evaporation tray 90 detects L, when the boat 90 is low level L below a predetermined _low level L (L <L _low), step S708; if the boat 90 at a predetermined low level L between the water line and the line L _high preset high water level (L _high _low ≤L≤L), step S710; if the level L of the boat 90 is above a preset high water level (L> L _high), performs step S712 ;

S708, the condensation fan 80 is operated at the second rotation speed for 10 minutes;

S710, the condensation fan 80 is operated at the second rotation speed for 20 minutes;

At S712, the condensing blower 80 is operated at the second rotational speed for 30 minutes.

In the control method for improving the evaporation capacity of the refrigerator in the embodiment, after the compressor 10 is turned off, the condensing fan 80 is still running, and continues to run for a period of time at a speed lower than the normal operation of the condensing fan 80, and then stops, and the rotation of the condensing fan 80 is increased. The air flowing above the evaporating dish 90 increases the evaporation capacity of the evaporating dish 90, ensuring that the defrosting water does not overflow.

In the prior art, the heating coil 100 is disposed in the evaporating dish 90, and the water in the evaporating dish 90 is heated by the heating tube. However, the heating coil 100 generally uses a copper tube or a steel tube with strong corrosion resistance, and the surface The use of heat shrinkable sleeve coating or surface to form a special anti-corrosion coating, the cost is high, and the heating coil 100 is also prone to the destruction of the local anti-corrosion layer in the process of actual transportation, production assembly, etc., and the defrosted water cannot be avoided. Corrosion causes the risk of refrigerant leakage. In addition, the heat exchange amount of the finite length heating coil 100 is small, and the evaporation speed is difficult to meet the use requirements.

In this embodiment, after the compressor 10 is turned off, the condensation fan 80 continues to run at the second rotation speed for a period of time, and the evaporation speed of the water is added, and the heating coil 100 is not disposed in the evaporation tray 90, so that the evaporation demand can be satisfied. While ensuring that the water in the evaporating dish 90 does not overflow, the above problems caused by arranging the heating coil 100 in the evaporating dish 90 are avoided.

Further, in the control method for improving the evaporation capacity of the refrigerator of the embodiment, the running time of the condensation fan 80 is determined according to the external environment humidity, and/or determined according to the average time of the refrigerator defrosting time interval, and/or according to the evaporating dish 90 The water level is determined, whereby the appropriate time for the condensing fan 80 to operate at the second speed can be determined, and the power consumption of the condensing fan 80 can be reduced while increasing the evaporation capacity and ensuring that the defrosting water does not overflow.

In this regard, it will be appreciated by those skilled in the <RTIgt;the</RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Therefore, the scope of the invention should be understood and construed as covering all such other modifications or modifications.

Claims

A control method for improving the evaporation capacity of a refrigerator, the refrigerator comprising a compressor, a condenser connected to the compressor, a condensation fan for accelerating heat dissipation of the condenser, and an evaporation tray disposed under the condenser; Wherein, the control method comprises:

When the compressor is turned on, the condensation fan runs at a first speed;

When the compressor is shut down, the condensation fan runs for a preset time at a second rotation speed less than the first rotation speed to increase the evaporation capacity of the evaporating dish.
The control method according to claim 1, wherein

The second rotational speed is 50% to 80% of the first rotational speed.
The control method according to claim 1, wherein

The preset time is determined according to an external environment humidity in which the refrigerator is located and/or determined according to an average time of the refrigerator defrosting time interval and/or according to a water level in the evaporating dish.
The step of determining the preset time according to the external environment humidity of the refrigerator according to the control method of claim 3, specifically comprising:

Detecting the external environment humidity of the refrigerator;

If the external environment humidity is less than the first preset ambient humidity, the condensation fan runs at the second rotation speed for a first preset time;

If the external environment humidity is greater than the first preset ambient humidity and less than the second preset ambient humidity, the condensation fan runs at the second rotational speed for a second preset time;

If the external environment humidity is greater than the second preset environment humidity, the condensation fan runs at the second speed for a third preset time;

The first preset time is less than the second preset time, and the second preset time is less than the third preset time.
The determining method according to claim 3, wherein the step of determining the preset time according to the average time of the refrigerator defrosting time interval comprises:

Obtaining a defrosting time point of the refrigerator before the current time, and calculating an average time of the refrigerator defrosting time interval;

If the average time is greater than the first preset average time, the condensation fan runs at the second speed for a fourth preset time;

If the average time is greater than the second preset average time and less than the first preset average time, the condensing fan runs the fifth preset time at the second speed;

If the average time is less than or equal to the second preset average time, the condensation fan runs at the second speed for a sixth preset time;

The fourth preset time is less than the fifth preset time, and the fifth preset time is less than the sixth preset time.
The control method according to claim 3, wherein the step of determining the preset time according to the water level in the evaporating dish comprises:

Detecting a water level in the evaporating dish;

If the water level in the evaporating dish is lower than a preset low water level line, the condensing fan runs at the second rotating speed for a seventh preset time;

If the water level in the evaporating dish is between the preset low water mark line and the preset high water mark line, the condensation fan runs at the second rotating speed for an eighth preset time;

If the water level in the evaporating dish is higher than the preset high water level line, the condensing fan runs at the second rotating speed for a ninth preset time;

The seventh preset time is less than the eighth preset time, and the eighth preset time is less than the ninth preset time.
The control method according to claim 3, wherein the step of determining the preset time according to the water level in the evaporating dish comprises:

Detecting a water level in the evaporating dish;

If the water level in the evaporating dish is gradually increased, the preset time is increased;

If the water level in the evaporating dish gradually decreases, the preset time is reduced.
A refrigerator comprising:

a compressor, a condenser connected to the compressor, a condenser fan for accelerating heat dissipation of the condenser, an evaporating dish disposed below the condenser, and a controller;

The controller is configured to control the condensing fan to operate at a first speed when the compressor is turned on;

The controller is further configured to control the condensation fan to operate at a second speed less than the first speed for a predetermined time when the compressor is shut down to increase an evaporation capability of the dish.
The refrigerator according to claim 8, further comprising:

a humidity sensor configured to detect an external environment humidity of the refrigerator;

The controller is further configured to determine the preset time based on the ambient humidity of the external environment.
A refrigerator according to claim 8, wherein

The controller is further configured to acquire a defrosting time point of the refrigerator before the current time, calculate an average time of the refrigerator defrosting time interval, and determine the preset according to an average time of the refrigerator defrosting time interval time.
The refrigerator according to claim 8, further comprising:

a water level sensor configured to detect a water level in the evaporating dish;

The controller is further configured to determine the preset time based on the water level in the evaporating dish.
The refrigerator according to claim 8, further comprising:

a water level sensor configured to detect a water level in the evaporating dish;

The controller is further configured to increase the preset time when the water level in the evaporating dish is gradually increased; and to decrease the preset time when the water level is gradually decreased in the evaporating dish.